Peonidin-3-O-(6-O-trans-feruloyl-2-O-β-glucopyranosyl-β-glucopyranoside)-5-O-β-glucopyranoside

Gly-Phe-Arg is a superpotent synthetic tripeptide mimics of the mud-crab pumping pheromone.

N-methylnicotinamide is a metabolite of niacin (or nicotinamide) and is commonly found in human urine. However low levels of urinary excretion of N-methylnicotinamide indicates niacin deficiency. In patients with liver cirrhosis nicotinamide methylation is increased leading to a rise in urinary N-methylnicotinamide. N-methylnicotinamide has been found to be a microbial metabolite.